Tooth paste



Patented Aug. 10, 1937 TOOTH PASTE Georg Behr, Gottinxen, Germany No Drawing- Application September 5, 1934, Se-

rial No. 742,860. In Norway September 11,

'5 Claims.

as long as the preparation is in a flexible tube or other packing. In addition the preparation should not contain hygroscopic substances, such as glycerine which would attract moisture and lead to the decomposition of the preparation.

In the preparation made in accordance with the present invention, therefore, vegetable, animal liquid or semiliquid oils or fats or also mineral oils or mineral oil products, which are not in themselves fats, but saturatedor unsaturated hydrocarbons (for example liquid paraffin, vaseline and the like) serve as a means to impart to the preparation the desired consistency.

' These substances are all capable of being readily produced in an entirely anhydrous condition and they are also of a non-hygroscopic character.

These oils are also practically entirely insoluble in water and as a consequence of this an intimate mixture of, for example, oil and chalk when applied to the teeth by means of a tooth brush will'not become spread in the mouth, but will prove to be of a very disagreeable sticky nature like an oil paint.

In order to eliminate this inconvenient property, an acid-resistant emulsifying agent, such as for example saponine, albumin, tragacanth or other types of gum and the like is added.

40 The effect of the addition of a froth producing agent, such as for example saponine, will be considerably increased by means of mucous substances, such as. gum tragacanth.

As will be understood from the above, an acidic tooth paste' according to the present invention consists'of an-anhydrous mixture of substances comprising a weakly acidic substance, a carbonate of an alkaline earth metal, an acid-resisting 5o emulsifying agent and an oilinto which said acidic substance, said alkaline earth carbonate and said emulsifying agent are incorporated.

55 disinfecting substances or substances which are which retains its acidic character for a sufli-' ciently long period of time.

The present invention has rendered it possible to produce acidic tooth pastes, containing chalk or other earth alkali metal carbonate as a polishing agent. The system, earth alkali carbonateacid incorporated into an oil will be of high keeping quality when water is absent. And when the acidic constituent of the system is a weak 'acid, such as acetyl-salicylic acid or an acid salt of a weak acid such as potassium biphosphate (KHZPOQ) an aqueous emulsion prepared from the mixture will remain of acid reaction for some time, usually at least for half an hour. This fact may be ascertained in the manner that the teeth are briished with a somewhat moist brush and paste; whereupon the brush with paste and water is laid aside. By means of litmus paper one is then able to test the duration of the acidic effect. An important advantage of a paste composed according to the invention also consists therein that the teeth are not ground with chalk and water, but with chalk and oil or an oil-emulsion. Analogous to the conventional grinding of sensible steel instruments. with oil stone instead of with water, the teeth will here be subjected to the more lenient treatment. will be more of a polishing than of a grinding character. By being embedded in oil, the chalk particles will have no or at least only a very slight tendency to become deposited or" stick to the teeth or gums and thus become the source of inflammations in the gum or to augment inflammations already present. The oil may also have the effect of loosening. particles of tartar from thev teeth similarly as oil is capable of removing particles of rust from ,iron. Finally, the eifect of the oil emulsion on the mouth may be augmented owing to the penetrating faculty of oil emulsions.

Example:

200 g. of olive oil is ground with 20 g. KHiPO-i. 20 g. gum tragacanth, 20 g. saponine,

0.5 g. saccharine, 1 2 g. essential oils and as an example 250 g.

CaCOa.

This treatment I claim:

1. Acidic tooth paste consisting of an anhydrous mixture of substances comprising a. weak- 1y acidic substance, carbonate of lime, and samnine, and an oil into which said substance, said lime carbonate, and said saponine are incorporated.

2. Acidic toothpaste consisting of an anhydrous mixture of substances comprising a weakly acidic substance, a carbonate of an alkalineearth-metaLan acid resisting emulsifying agent and an oil into which said acidic substance, said alkaline earth carbonate and said emulsifying agent are incorporated.

3. Acidic tooth paste consisting ofan anhydrous mixture of substances comprising a weakly acidic substance, a carbonate of an alkaline earth metal, saponine and an oil into which said and an oil into which said acid salt, said alkaline earth carbonate and said emulsifying agent are GEORG BEER.

incorporated, 

